Watermelon (Citrullus vulgaris L.) is a summer fruit typical to help fatigue systemic absorption is getting better. The goal of this study is to screen antioxidant activity to ensure the possibility as a functional material for exocarp of watermelon. Watermelon was extracted with 70% methanol, 70% ethanol, chloroform:methanol (CM, 2:1, v/v). Total phenol contents were 12.01 mg/g, 8.89 mg/g, 3.53 mg/g in the 70% methanol, 70% ethanol, CM, in that order, respectively. Total flavonoid content, DPPH radical scavenging activity, ABTS radical scavenging activity, ferric reducing antioxidant power (FRAP), β-carotene bleaching assay were 70% methanol extract remarkably higher than the other extracts. And these results showed the same trend of total phenol content. From the above results shows that watermelon was effective on the antioxidative activity.

Abstract
 1. 서 론
 2. 재료 및 방법
  2.1. 실험재료
  2.2. 시료의 추출
  2.3. Total phenol 함량 측정
  2.4. Total flavonoid 함량 측정
  2.5. DPPH radical scavenging activity 측정
  2.6. ABTS radical scavenging activity 측정
  2.7. Ferric reducing antioxidant power (FRAP) 측정
  2.8. β-carotene bleaching activity 측정
  2.9. 통계처리
 3. 결과 및 고찰
  3.1. 수율
  3.2. Total phenol
  3.3. Total flavonoid
  3.4. DPPH radical scavenging activity
  3.5. ABTS radical scavenging activity
  3.6. Ferric reducing antioxidant power (FRAP)
  3.7. β-carotene bleaching activity
 4. 결 론
 참 고 문 헌

• Duan Yishan(부산대학교 식품공학과) | Yishan Duan (Department of Food Science & Technology, Pusan National University)
• 김민아(부산대학교 식품공학과) | Min-A Kim (Department of Food Science & Technology, Pusan National University)
• 김한수(부산대학교 식품공학과) | Han-Soo Kim (Department of Food Science & Technology, Pusan National University) Corresponding author
• 장성호(부산대학교 바이오환경에너지학과) | Seong-Ho Jang (Department of Bioenviromental Energy, Pusan National University)
• 강동수(전남대학교 식품공학·영양학부) | Dong-Soo Kang (Division of Food Technology & Nutrition, Chonnam National University)